Abstract
Sodium atoms are ionized by 777 nm, 150 fs laser pulses. Modulations are observed in the multiphoton ionization yield as a function of laser intensity. The oscillations are attributed to Ramsey interference caused by coherent population transfer between bound states at two different times during a single laser pulse.
- Received 23 August 1994
DOI:https://doi.org/10.1103/PhysRevLett.74.1091
©1995 American Physical Society